Sewing machine attachment



Jan. 2, 1934. Q GOSMAN ,9

SEWING MACHINE ATTACHMENT Filed April 14, 1935 3 Sheets-Sheet l Inventor0s/&er asvzz 22/ Jan. 2, 1934.

( 3. GOSMAN SEWI NG MACHINE ATTACHMENT Filed April 14, 1953 3Sheets-Sheet 2 Jan. 2, O GOSMAN 1,941,858

SEWING MACHINE ATTACHMENT FiledApril 14, 1933 3 Sheets-Sheet 3 lnveniorasker 'osflza 72/ Patented Jan. 2, 1934v 1 UNITED :s'rA r1 Thisinvention relates to sewing machines and more particularly to-that-typeof sewing machine especiallyadapted for use in the making of 'belt Iaccommodating loopsfortrousers.

In accordancewith thepresent-inventionmeans is providedfor readyattachment to such a type of machine for cutting the cloth from whichthe loops aremade into a-strip of the desired width thereby insuring themaking of belt loops ofunif orm width.

Briefly the inventionconsists in the provision of a feeding device and acutting device adapted to cooperate with the usual feeding device ofthemachine in a manner to insure-'the'placing'of the cloth under propertension during the cutting operation.

Further the invention-consistsin the'provision of a-meter'for attachmentto-the machine so that the operator may readilyascertaimwhen a suitablelength of thematerial-has been cutand sewed blade. 7

formaking' a predetermined number" of belt loops.

The invention together with its numerous .objects and advantages will bebest understood from a study of the following description taken inconnection with the accompanying drawings wherein: 7 g

Figure 1 is a topplanview of asewing machine having theattachment-applied thereto.

Figure 2 is-a fragmentary plan view ofa portion of the machineshowingtheattachment applied thereto and with certain parts 'of the machineremoved;

Figure 3 is a view -somewhat=similar=toFigure 2 with thebasegplateof"the machine removed.

Figure 4 is a sectional View -taken substantially on the line 4-4ofFigure 3.

Figure 5 is a side '-elevational view of a cam operated arm to behereinafter more fully referred'to. V V

Figure 6 is 'a fragmentary "side j elevational view of a feed deviceforming part of the invention, with certain p'artsbrokenlaway and shownin section.

Figure 7 is .abottom plan view'o'f the .tooth equippedhead of thefeeddevice. t

Figure 8 isa-side elevational view thereof. Figure 9 is a plan-view of aportion of theusual cam shaft.- r I Figure 10 is "asectional viewtaken'substantially ontherline :10-*l0 of 'Figure9. I Figure 11is'asectionalview taken-substantially on thelinell-llof Figure '2. i V

Figure 12 is a perspective view of the knife Figure I3 is aside=e1evationalview aof the cloth guide. r

Figure 14 is a plan view-of a portion of the cloth showing a a partthereof a folded and stitched as is customary T in the. making of loops,and another portion thereof slit in accordance with the presentinvention.

Figure '1'5is-a transverse sectional view taken substantially on theline 1515 of' Figure 14.

Fig ure 'lfi is a fragmentary sectionaleleva tional view showing themeteras appliedto the machine. 1

Referring to the drawings by reference numerals, "reference will be hadparticularly only to those parts of the conventional sewing machine withwhich theinvention' is concerned. In this connection itwill'be'seen'that'the sewing machine designated generally by thereference character 10 includes among parts the base plate 11, the clotha guiding and folding member 12, pressure foot 13, the feed'member 14forfeeding the cloth throughthe machin'eandbeneath the presser foot 13,arm 15': carryingthe feedmember 14, shaft 16suitably journalled inbearing ears provided therefore at 1 the rear edge of the base platellythe plate 1 7 pivotally connected with the shaft lfi and provided atitsupper edge with hearing sleeves 18' in "which are fixed the-ends of ashaft l9 and towvhich shaft is pivotednne end of the-feed arm 15. lnaddition the sewing machine is equipped'with the usual drive shaft 20that, as is conventional, is provided with the cam'ZLWith which the armlfadsengagedinthe usual -manner for actuating the arm to feed the cloththrough the guide and to the'needles of the machine ina well'knownmanner.

"The sewing machine as above described is a conventional and well knowntype of machine especially adapted for sewing strips of cloth in themaking of 'belt'loops and-isnot of the essence of the invention. "Inusing this type of machine itis first necessaryto cut the vcloth intostrips of'desired width and this is usually accomplished by handwith'the result'that the stripsare not always of uniform width. I

To overcome this it is now proposed, in accordance with thepresentinvention to provide for the cutting 'o'fcloth of any widthwithin reason into a strip of the proper width as the cloth is being'fedto the'machine. 'To'this endthen I the invention consists in theprovision-of 'a .de-

vice to cooperate with the conventional cloth feeding-device14 inexerting -suflicient tension on the clothes it is being fed to themachine and thereby insure a neat-rand eflic'ient cutting orslitting ofthe cloth into a strip of the desired width. This auxiliary feed devicecomprises an arm 22 which at one end is provided with an eye or sleeve23 for pivotally engaging the arm with the pivot shaft 19 as suggestedin Figure 4. Adjacent its free end the arm 22 is provided with adepending lug 24 to which is secured one end of a strip 25 of metal orother suitable material that hasits free end'paralleling the free endportion of the arm '22as shown in Figure 5. The free end of the arm 22and the free end of the strip 25 are adapted to straddle a cam 26provided on the shaft 20 in accordance with the.

present invention and disposed at the proper angular relation withrespect to the cam 21. An arcuate arm 27 is secured at one end as at:2 8to the free end of the arm 22 and this arm 2'7 is divided adjacent itsfixed end'into two sections pivotally connected as at 29. A suitablespring 30 engages the convex edge of the arm 27 and bridges the jointbetween the sections of thearm in a manner to normally urge the freesection of the arm downwardly- :and in alinement with the-fixedseotionof the arm. At one end the spring 30 is anchored as at 31 to thefixedsection of the arm27;

At its free end the arm 27 is provided with a tooth equipped headdisposedin advance of the cloth feeding device 14 and in substantialalinementwiththe saidcloth feeding device 14 to engage the top face ofthe cloth. andvthereby cooperate with the feeding device 14 for feedingthe cloth through the machine and at the same time place a desiredtension upon the cloth during the actual slitting or cutting operation.The said head on the arm 2'7 is designated bythe reference numeral 32and as clearly shown in Figures 7 and 8 comprises a'body platethat isbolted or otherwise secured to the free end of the arm 27 and isequipped with laterally spaced relatively short toothed bars 33 and arelatively elongated intermediate toothed bar 34. r

The cutting device includes an arm'35 that at one end'is provided withan eye or sleeve 36 for pivotal engagement with the shaft lfi as shownin Figure4. At its free end the'arm extends upwardly and forwardly asat'37 and cooperates with the free end of a strip 38 secured to anintermediate portion of the arm 35 to straddle a third cam 39 providedon the shaft 20 and disposed at the same angle as the cam 21 withreference to the cam 26. g v i .To the free end 37 of the arm 35thereissecured one end of an angulararm 40, saidone end of the arm beinganchored to the end37 ofarm 35 asat 41. The free end of the arm 40 isprovided with bolt and nut'means- 42-for engaging the slotted end of aknife blade 43 for securing the blade 43 at the desired verticaladjustment on the arm 40. The free-end of the arm 40 terminates adjacentthe free endof the aforementioned 21111127101 supporting the knife 43ina'manner to cooperate with a; knife blade 44- embedded in the inner sideof the'combined guide and folding member 12 as will be clear from astudy of Figure 11. s, 1 As. shown in Figure 3 the arm 22 is normallyurged toward'the arm 15 through the medium of a spring .45disposed aboutthe shaft 19 andbearing against the proximate end of the arm 22.

- As is also conventional, the plate 17 is caused to rock back andforth, motion being transmitted thereto from the camshaft 20 through themedium of a disk 46' provided on oneen'd of the shaft andhavingeccentrically connected thereto an arm 47 which is pivotallyconnected to an arm 48 extending from one end of the plate 17 as will beclear from a study of Figure 3.

In operation the cloth of any suitable length and width is fed throughthe machine passing through the combined guide and folding'member 12.Obviously in the feeding of the cloth the arm 15 carrying the clothengaging and feeding member 14' is caused'to oscil1ate,.and upon itsforward and upward movement engages the under side of the cloth to drawthe cloth through the machine as the arm 15 moves rearwardly anddownwardly. Injthis connection it will be noted that the arm 22 throughthe medium of the cam connection between the arm and the shaft 20 andthe rocking movement of the plate 17 has a movement substantiallysimilar to the arm 15 with a result, that as the member 14 associatedwith the arm 15 moves up to engage the under side of the cloth, the arm22 moves downwardly and forwardly so that thetoothedbars 33, 34 engagethe top side of the cloth in advance of the member 14 and at about thesame time that the member 14 engages the under sideof thecloth.Similarly the arm 22 and its associated parts rise and move rearwardlyat substantially the same time that The arm 35 through the medium of thecam connection between said arm 35 and shaft 20 will' of course haveonly a rocking movement giving a vertical up and down movement to theknife 43, the knife 43 moving downwardly and cutting the cloth as thetoothed equipped elements 32 and 14 engage the cloth and draw itforwardly through the machine. Upon releaseof the cloth by the toothequipped elements 14 and 32 the movement of the knife 431s upwardly sothat it will be seen that; during each actual cutting stroke of theknifethe cloth is under sufficient tension to insure a smooth cuttingoperation and a cutting of the cloth 45 into auniform strip.

- Thereis also provided on'one side of the guide 12 in accordancewiththe presentinvention a combined shield and deflector 49 againstwhichthe unused portion 45a .of the cloth is directed as the feeding andcutting of the .cloth takes place. 1 Shield 49 serves to guide theunused portion 45a' of theclothoutwardly and downwardly so as not tointerfere with either the feeding or cutting operation.

As is well known, and 'as clearly shown in Figures 14 and 15 as theclothpasses through the combined guide and folding member 12 the cloth isfolded in a manner clearly shown-in Figure 15 and the folded andstitched portion of thecloth is then cut at intervals into relativelyshort strips of suitable length for use as belt,loops of thetype thatare usually stitched onto the waist of trousers for accommodating asupporting belt. To insure positive andefficient cooperation between thefiied knife blade 44and the knife blade 43 thereis provided a springtension device engaging one side of the ar m40 for urging the arm in thedirection ofjthe arm 27. Such spring tension device in the presentinstance, and as shown in Figures land 2 consists of a standard 50rising from the plate 11 and having swivelly connected with its upperend an adjusting screw 51 having screw threadedly engaged therewith anut 52. Extending laterally from the arm 40 is a pin 53 and a coilspring 54 has one end disposed about the pin 53 and abutting the arm 40,while the other end of the spring is disposed ill) about the screw 51and seats against the nut 52. Obviously by screwing the nut 52 relativeto the screw 51 in the desired direction tension of the 7 spring 54 maybe adjusted as found desirable.

In accordance with the present invention there is also provided a meterdesignated generally by the reference numeral 55 and this meter is forthe purpose of enabling the operator to determine when a suitable.length of cloth has been folded and stitched and as would be necessaryfor making a predetermined number of belt loops. In the present instanceI have shown the meter. 55 having a driving connection with the shaft 20through the medium of gearing 56 and a universal connection designatedgenerally by the reference numeral 57 and of a well'known type. Thedetails of the meter structure are not of the essence of the presentinvention and in the present instance the meter 55 is somewhat similarto a speedometer of a known type and is so adjusted that the meterreading will change one digit when a predetermined length of the clothhas been folded and stitched into strip form. Thus for example assumingthat to make twenty four belt loops it would require a strip twentyseven inches long, the meter would be so set that when approximatelytwenty seven inches of the cloth has been folded and stitched intoproper strip form the meter reading will change one digit, and obviouslywhen the reading so changes the operator then is visually informed thata sufficient portion of the cloth has been folded and stitched into astrip of the required length.

While I have herein shown and described the preferred embodiment of theinvention it is to be understood that it is in nowise intended torestrict the invention to the precise details, combination, constructionand arrangement of elements as shown and described other than may benecessary to teach the requirements of the prior art and scope of theappended claims.

Having thus described my invention, what I claim as new is:

l. A sewing machine including in combination, a presser foot, a pivotshaft, a plate connected with the pivot shaft, a shaft carried by thepivot plate,a cam equipped shaft, an operating connection between saidcam equipped shaft and said plate for rocking the latter upon rotationof the cam equipped shaft, a feeding in finger arranged to engage theunder side of the fabric for feeding the fabric forwardly beneath thepresser foot, a rocker arm supporting said finger pivotally connectedwith the plate supported shaft and being also provided intermediate itsends with means for engaging a cam on the cam shaft, a second feeding infinger disposed forwardly of the first named feeding in finger andarranged to engage the top face of the fabric and to cooperate with thefirst named feeding in'finger for feeding the cloth forward beneath thepresser foot, a rocker arm for the second named feeding in fingerpivotally connected with the plate carried shaft, means on the rockerarm of the second named feeding in finger for engaging a second cam onsaid cam shaft, a rocker arm pivotally connected at one end to saidpivot shaft, means on the last named rocker arm engaging a third cam onsaid cam shaft, a knife carrying member secured tothe last named rockerarm, and a knife carried by said knife carrying member for severing thefabric lengthwise thereof as it is fed forward beneath the presser foot.

'2. Asewing machine including in combination beneath the presser foot, apivot shaft, a plate connected with the pivot shaft, a shaft carried bysaid plate, a cam equipped shaft, an operating connection betweenthe camequipped shaft and the plate for rocking the latter upon rotation of thecam equipped shaft, a feeding in finger arranged in operative positionto the combined guide and folding member to engage the under side of thefabric for feeding the fabric through said member, a rocker armsupporting said finger and pivotally connected with the plate supportedshaft, said rocker arm being also provided intermediate its ends withmeans for engaging a cam on the cam shaft, a second feeding in fingerdisposed forwardly of the first named feeding in finger and arranged toengage thetop face of the fabric to cooperate with the first namedfeeding in finger for feeding the cloth, a rocker arm for the secondnamed feeding in finger pivotally connected with the plate carriedshaft, means on the rocker arm of thesecond named feeding in finger forengaging a second cam on said cam shaft, a rocker arm pivotallyconnectedat one end to said pivot shaft, means on the last named rocker arm forengaging a third cam on said cam shaft, and a cutting device carried bythe last named rocker arm for severing the fabric lengthwise thereof asit passes through said combined guide and folding member.

3. A sewing machine including in combination a cam shaft, a pivot shaftmounted rearwardly of the cam shaft and parallel thereto, a plateconnected with the pivot shaft, an operating connection between the camshaft and the plate for rocking the latter upon rotation of the camshaft, a

pair of spaced rocker arms pivotally connected at one end with saidplate, a pair of cams on the cam shaft, means on each of said rockerarms for engaging one of said cams, a feeding in finger mounted on oneof said rocker arms, a second feeding in finger mounted on the other ofsaid rocker arms in advance of the first named feeding in finger andcooperable therewith for feeding Y cloth through the sewing machine andfor exerting a tension on the cloth during the feeding thereof, a rockerarm pivotally connected at one end with the pivot shaft, a third cam onthe cam shaft, means on the last named rocker arm engaging said thirdcam, and a trimming device carried by the last named rocker arm inproximity to the second named feeding in finger for severing the clothas it is fed through the machine.

4. A sewing machine including in combination a folder for guiding andfolding a strip as it is fed through the sewing machine, a trimmingmechanism operating laterally of the folder and ineluding a knifemovable relative to the folder, a

